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参数资料
| 型号： | LB11850VA |
| 厂商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分类： | 运动控制电子 |
| 英文描述： | AC MOTOR CONTROLLER, PDSO24 |
| 封装： | 0.225 INCH, SSOP-24 |
| 文件页数： | 5/14页 |
| 文件大小： | 116K |
| 代理商： | LB11850VA |
LB11850VA
No.A0609-13/14
<LIM pin>
The minimum speed is determined by the voltage of the LIM pin.
(1) Obtain the ratio of the minimum speed required to the maximum speed.
Ra = Minimum speed/maximum speed .... <1>
In the example shown in the figure above, Ra = minimum speed/maximum speed = 3000/10000 = 0.3.
(2) Obtain the product of the duty ratio at which the maximum speed is obtained and the value in equation <1>.
Ca = Duty ratio at maximum speed
×Ra .... <2>
In this example, Ca = duty ratio at maximum speed
×Ra = 0.8×0.3 = 0.24.
(3) Obtain the required LIM pin voltage.
LIM = 5-(3
×Ca) .... <3>
In this example, LIM = 5-(3
×Ca) = 5-(3×0.24) ≈ 4.3V.
(4) Divide the resistance of 5VREG, and generate the LIM voltage.
In this example, the voltage is 4.3V so the resistance ratio is 1: 6.
The resistance is 10k
between 5VREG and LIM and 62k between LIM and GND.
(RPM)
CTL Duty(%)
Maximum speed
0%
5V
100%
2V
Minimum
speed setup
CVO pin voltage (V)
2000
4000
6000
8000
10000
5VREG
VREF
CVI
SOFT
LIM
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| LB11850VA-MPB-E | 功能描述:马达/运动/点火控制器和驱动器 RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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